-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, S/6kD+NxpVXQxtjJSX4qIzWUe6QzUqtM3VRlbHC4W0AnQ/Q/0H5uYSU2AvEdLh20 ufxWwcoJx64AJ16hxYmnOg== 0001047469-03-038129.txt : 20031120 0001047469-03-038129.hdr.sgml : 20031120 20031120155816 ACCESSION NUMBER: 0001047469-03-038129 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20031120 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: DYNAMEX INC CENTRAL INDEX KEY: 0001015483 STANDARD INDUSTRIAL CLASSIFICATION: TRUCKING & COURIER SERVICES (NO AIR) [4210] IRS NUMBER: 860712225 STATE OF INCORPORATION: DE FISCAL YEAR END: 0731 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-47989 FILM NUMBER: 031015623 BUSINESS ADDRESS: STREET 1: 1431 GREENWAY DRIVE STREET 2: SUITE 345 CITY: IRVING STATE: TX ZIP: 75038 BUSINESS PHONE: 9727568180 MAIL ADDRESS: STREET 1: 1431 GREENWAY DRIVE STREET 2: SUITE 345 CITY: IRVING STATE: TX ZIP: 75038 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: DARDICK NATHAN H CENTRAL INDEX KEY: 0001062353 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 303 EAST WACKER DRIVE STREET 2: SUITE 1000 CITY: CHICAGO STATE: IL ZIP: 60601 BUSINESS PHONE: 3122072400 MAIL ADDRESS: STREET 1: 303 EAST WACKER DRIVE STREET 2: SUITE 1000 CITY: CHICAGO STATE: IL ZIP: 60601 SC 13G/A 1 a2123349zsc13ga.htm SG 13G/A
QuickLinks -- Click here to rapidly navigate through this document
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 1)

DYNAMEX, INC.

(Name of Issuer)

COMMON STOCK, PAR VALUE $0.01 PER SHARE

(Title of Class of Securities)

26784F103

(CUSIP Number)

November 13, 2003

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

        o      Rule 13d-1(b)

        ý      Rule 13d-1(c)

        o      Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


CUSIP No.            26784F103        

             

1.   Names of Reporting Persons        NATHAN H DARDICK
I.R.S. Identification Nos. of above persons (entities only).

 

 

 

 

 

 

 

2.   Check the Appropriate Box if a Member   (a)   o
    of a Group (See Instructions)   (b)   o

 

 

 

 

 

 

 

3.   SEC Use Only

 

 

 

 

 

 

 

4.   Citizenship or Place of Organization
UNITED STATES

 

 

 

 

 

 

 

Number of Shares Beneficially Owned by Each Reporting Person With   5.   Sole Voting Power        513,600
             
       
        6.   Shared Voting Power        0

 

 

 

 

 

 

 
       
        7.   Sole Dispositive Power        513,600

 

 

 

 

 

 

 
       
        8.   Shared Dispositive Power        0

 

 

 

 

 

 

 

9.   Aggregate Amount Beneficially Owned by Each Reporting Person        513,600

 

 

 

 

 

 

 

10.   Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares    o

 

 

 

 

 

 

 

11.   Percent of Class Represented by Amount in Row (9)
    Less than 5.0%

 

 

 

 

 

 

 

12.   Type of Reporting Person*
    
IN

 

 

 

 

 

 

 

*SEE INSTRUCTIONS BEFORE FILLING OUT!

        

 

 

 

 

 

 

        The purpose of this amendment filing is to disclose that as of the date hereof, the Reporting Person no longer has beneficial ownership of more than five percent of the class of securities of the Issuer.


Item 1(a)

 

Name of Issuer:

 

 

Dynamex, Inc.

Item 1(b)

 

Address of Issuer's Principal Executive Offices:

 

 

1431 Greenway Drive, Suite 345, Irving, Texas 75038

Item 2(a)

 

Name of Person Filing:

 

 

Nathan H Dardick

Item 2(b)

 

Address of Principal Business Office or, if None, Residence:

 

 

2331 Orrington Avenue, Evanston, Illinois 60201-2819

Item 2(c)

 

Citizenship:

 

 

United States

Item 2(d)

 

Title of Class of Securities:

 

 

Common Stock, $0.01 par value per share

Item 2(e)

 

CUSIP Number:

 

 

26784F103

Item 3.

 

Filing Pursuant to Rule 13d-1(b), or 13d-2(b) or (c):

 

 

Not Applicable

Item 4.

 

Ownership:

 

 

(a)

 

Amount beneficially owned:
        513,600
    (b)   Percent of class:        Less than 5%
    (c)   Number of shares as to which such person has:
        (i)   Sole power to vote or to direct the vote        513,600
        (ii)   Shared power to vote or to direct the vote        0
        (iii)   Sole power to dispose or to direct the disposition of        513,600
        (iv)   Shared power to dispose or to direct the disposition of        0

Item 5.

 

Ownership of Five Percent or Less of a Class:

 

 

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [
X].

Item 6.

 

Ownership of More than Five Percent on Behalf of Another Person:

 

 

Not Applicable

Item 7.

 

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person:

 

 

Not Applicable

Item 8.

 

Identification and Classification of Members of the Group:

 

 

Not Applicable
             


Item 9.

 

Notice of Dissolution of Group:

 

 

Not Applicable

Item 10.

 

Certification:

 

 

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transactions having that purpose or effect.


SIGNATURE

        After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.


Dated: November 19, 2003

 

 

 

 

/s/ Nathan H Dardick

Nathan H Dardick



QuickLinks

SIGNATURE
-----END PRIVACY-ENHANCED MESSAGE-----